diff --git a/.obsidian/workspace b/.obsidian/workspace
index 84d506f..c66d6c6 100644
--- a/.obsidian/workspace
+++ b/.obsidian/workspace
@@ -9,7 +9,7 @@
         "state": {
           "type": "markdown",
           "state": {
-            "file": "02. PARA/01. Project（專案）/008. Sentinel.md",
+            "file": "02. PARA/03. Resources（資源）/C++17/for_each.md",
             "mode": "source",
             "source": true
           }
@@ -69,7 +69,7 @@
             "state": {
               "type": "backlink",
               "state": {
-                "file": "02. PARA/01. Project（專案）/008. Sentinel.md",
+                "file": "02. PARA/03. Resources（資源）/C++17/for_each.md",
                 "collapseAll": false,
                 "extraContext": false,
                 "sortOrder": "alphabetical",
@@ -86,7 +86,7 @@
             "state": {
               "type": "outline",
               "state": {
-                "file": "02. PARA/01. Project（專案）/008. Sentinel.md"
+                "file": "02. PARA/03. Resources（資源）/C++17/for_each.md"
               }
             }
           }
@@ -116,15 +116,15 @@
   },
   "active": "ec13ce58b15fa6d4",
   "lastOpenFiles": [
+    "02. PARA/03. Resources（資源）/讀書筆記/20220619 - 精確的力量.md",
+    "02. PARA/03. Resources（資源）/C++17/智慧指標.md",
+    "02. PARA/03. Resources（資源）/C++17/C++17.md",
     "02. PARA/01. Project（專案）/008. Sentinel.md",
     "00. TOP/01. TODO.md",
     "02. PARA/02. Area（領域）/20150803 - Android/ADB 取得 APK 的 icon.md",
     "02. PARA/02. Area（領域）/20150803 - Android/ADB.md",
     "02. PARA/03. Resources（資源）/QT/QVariant.md",
     "00. TOP/02. MOC.md",
-    "01. Daily/2021/06/2021-06-10(週四).md",
-    "02. PARA/03. Resources（資源）/OpenGL.md",
-    "02. PARA/03. Resources（資源）/C++17/Structured binding declaration.md",
-    "02. PARA/03. Resources（資源）/Tool Setup/Chrome.md"
+    "01. Daily/2021/06/2021-06-10(週四).md"
   ]
 }
\ No newline at end of file
diff --git a/02. PARA/03. Resources（資源）/C++17/for_each.md b/02. PARA/03. Resources（資源）/C++17/for_each.md
new file mode 100644
index 0000000..1f3f3b8
--- /dev/null
+++ b/02. PARA/03. Resources（資源）/C++17/for_each.md	
@@ -0,0 +1,11 @@
+for_each 是一個函式，它的原型是：
+```cpp
+template<class InputIterator, class Function>
+   Function for_each(
+      InputIterator _First, 
+      InputIterator _Last, 
+      Function _Func
+   );
+```
+
+它需要3個參數，第一個
\ No newline at end of file